Improvement device for connecting mode of connecting shaft

Abstract

The utility model relates to an improved device for a connecting mode of a connecting shaft, which comprises a shaft head and a shaft, the shaft head is mounted at the front end of the shaft, a spring mounting sleeve is mounted at the rear end of the shaft, the spring mounting sleeve is sleeved in a gear, and a protective cover is mounted outside the gear. A second mounting hole is formed in the shaft head, key grooves are symmetrically formed in the outer surface of the second mounting hole, and a third clamping table is arranged on the outer circumference of the shaft head; a shaft tip is arranged at the front end of the shaft, a first clamping table and a second clamping table are arranged on the outer circumference of the rear end of the shaft tip, and first mounting holes arranged along the circumference are formed in the rear end of the shaft. Through a brand new structure of the shaft head and the shaft, original bolt connection of the shaft head and the shaft of the tube removing machine is changed into interference connection, double keys are arranged, the connection strength and stability are guaranteed, the structure is simple, the shaft head and the shaft are convenient to replace, the point inspection efficiency is improved, fault points at the position are reduced, and the stability of equipment is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of connecting shaft technology, and specifically to an improved device for connecting shaft connection. Background Technology

[0002] The tube stripping machine is a type of metal pressure processing equipment, mainly used in seamless steel pipe production lines. Based on process requirements, it can be divided into two categories: bar stripping machines and tube stripping machines. The former removes the mandrel after fixing the rough tube, while the latter removes the rough tube after fixing the mandrel. It is mainly configured in continuous rolling mills such as PQF and MPM, and is suitable for the production of high-precision seamless steel pipes such as nuclear power plant tubes and high-pressure boiler tubes. Typical application cases include companies such as Tianjin Seamless Steel Pipe Plant.

[0003] The existing tube removal machine's connecting shaft consists of a shaft head and a shaft, which are connected by a connecting block and fixed with bolts. During processing, the shaft head and shaft rotate at high speed. After long-term use, the connecting block between the shaft head and shaft wears due to friction. When the bolt is under stress, it breaks, and the shaft head falls off, resulting in the inability to transmit torque normally. This causes the tube removal machine to experience torque alarms, shutdowns, and other malfunctions.

[0004] To address the above technical problems, this utility model proposes an improved device for connecting shaft connection. Summary of the Invention

[0005] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide an improved device for connecting shaft connection. Through a new structure of shaft head and shaft, the original bolt connection between the shaft head and shaft of the tube removal machine is changed to an interference fit and equipped with a double key to ensure connection strength and stability. Moreover, the structure is simple, making it easy to replace the shaft head and shaft, improving inspection efficiency, reducing the occurrence of fault points at this location, and ensuring the stability of the equipment.

[0006] The technical problem solved by this utility model is achieved through the following technical solution:

[0007] An improved device for connecting shafts includes a shaft head and a shaft. The shaft head is installed at the front end of the shaft, and a spring mounting sleeve is installed at the rear end of the shaft. The spring mounting sleeve is fitted inside a gear, and a protective cover is installed outside the gear.

[0008] The shaft head has a built-in second mounting hole, and keyways are symmetrically arranged on the outer surface of the second mounting hole. A third retaining platform is arranged on the outer circumference of the shaft head.

[0009] The shaft has a shaft tip at its front end, a first retaining plate and a second retaining plate on the outer circumference of the rear end of the shaft tip, and a first mounting hole arranged along the circumference at the rear end of the shaft.

[0010] Furthermore, a buffer device is installed between the third clamping platform of the shaft head and the second clamping platform at the front end of the shaft.

[0011] Furthermore, the outer surface of the shaft tip is symmetrically provided with keys, which match the keyways symmetrically provided on the outer surface of the second mounting hole.

[0012] Furthermore, the tip of the shaft is mounted in the second mounting hole of the shaft head.

[0013] Furthermore, the front end of the protective cover, the front end of the gear, and the rear end of the shaft are connected by a first bolt and a third bolt, respectively.

[0014] Furthermore, the rear end of the protective cover, the rear end of the gear, and the rear end of the spring mounting sleeve are connected by a second bolt.

[0015] The advantages and positive effects of this utility model are:

[0016] This invention, through a novel structure for the shaft head and shaft, replaces the original bolted connection between the shaft head and shaft of the tube-removing machine with an interference fit, equipped with a double key to ensure connection strength and stability. The structure is simple, facilitating shaft head and shaft replacement, improving inspection efficiency, reducing the occurrence of fault points in this location, and ensuring equipment stability. It solves the problem of existing tube-removing machines where the shaft head and shaft are connected by a connecting block and fixed with bolts. During processing, the shaft head and shaft rotate at high speed, and after long-term use, the connecting block between the shaft head and shaft wears due to friction, causing the bolts to break under stress and the shaft head to fall off, resulting in abnormal torque transmission and malfunctions such as torque alarms and machine shutdowns. Attached Figure Description

[0017] Figure 1 This is a cross-sectional structural schematic diagram of the improved device for connecting shaft connection according to this utility model;

[0018] Figure 2 This is a schematic diagram of the shaft cross-sectional structure of the improved device for connecting shaft connection method of this utility model;

[0019] Figure 3 This is a schematic diagram of the shaft head structure of the improved connection method of the connecting shaft of this utility model;

[0020] Figure 4 for Figure 3 A schematic diagram of the AA cross-sectional structure;

[0021] In the picture:

[0022] 1-Shaft head, 2-Buffer device, 3-Shaft, 4-Spring mounting sleeve, 5-First bolt, 6-Protective cover, 7-Gear, 8-Second bolt, 9-Third bolt, 10-First locking platform, 11-Second locking platform, 12-First mounting hole, 13-Shaft tip, 14-Third locking platform, 15-Second mounting hole, 16-Keyway. Detailed Implementation

[0023] The present invention will be further described in detail below through specific embodiments. The following embodiments are only descriptive and not limiting, and should not be used to limit the protection scope of the present invention.

[0024] An improved device for connecting shafts includes a shaft head 1 and a shaft 3. The shaft head 1 is installed at the front end of the shaft 3, and a spring mounting sleeve 4 is installed at the rear end of the shaft 3. The spring mounting sleeve 4 is fitted inside a drum gear 7, and a protective cover 6 is installed outside the drum gear 7.

[0025] The shaft head 1 has a second mounting hole 15 inside, and keyways 16 are symmetrically arranged on the outer surface of the second mounting hole 15. A third mounting platform 14 is arranged on the outer circumference of the shaft head 1.

[0026] The front end of shaft 3 is provided with a shaft tip 13, which is installed in the second mounting hole 15 of shaft head 1. The outer circumference of the rear end of shaft tip 13 is provided with a first retaining plate 10 and a second retaining plate 11. One end face of the third retaining plate 14 of shaft head 1 contacts the end face of the first retaining plate 10. A buffer device 2 is installed between the third retaining plate 14 of shaft head 1 and the second retaining plate 11 at the front end of shaft 3. Keys are symmetrically provided on the outer surface of shaft tip 13, and the keys match the keyways 16 symmetrically provided on the outer surface of the second mounting hole 15. The rear end of shaft 3 is provided with a first mounting hole 12 arranged circumferentially.

[0027] The front end of the protective cover 6, the front end of the drum gear 7, and the rear end of the shaft 3 are connected by the first bolt 5 and the third bolt 9, respectively; the rear end of the protective cover 6, the rear end of the drum gear 7, and the rear end of the spring mounting sleeve 4 are connected by the second bolt 8.

[0028] This invention, through a novel structure for shaft head 1 and shaft 3, replaces the original bolted connection between shaft head 1 and shaft 3 in the tube-removing machine with an interference fit, equipped with a double key to ensure connection strength and stability. The structure is simple, facilitating the replacement of shaft head 1 and shaft 3, improving inspection efficiency, reducing the occurrence of fault points in this location, and ensuring equipment stability. It solves the problem of existing tube-removing machines where shaft head 1 and shaft 3 are connected by a connecting block and fixed with bolts. During processing, shaft head 1 and shaft 3 rotate at high speed, and after long-term use, the connecting block between shaft head 1 and shaft 3 wears due to friction, causing the bolts to break under stress and shaft head 1 to fall off, resulting in abnormal torque transmission and malfunctions such as torque alarms and machine shutdowns.

[0029] The working principle of this utility model:

[0030] The shaft tip 13 of shaft 3 is installed in the second mounting hole 15 of shaft head 1. One end face of the third retaining plate 14 of shaft head 1 contacts the end face of the first retaining plate 10. A buffer device 2 is installed between the third retaining plate 14 of shaft head 1 and the second retaining plate 11 at the front end of shaft 3. The keys symmetrically placed on the outer surface of shaft tip 13 match the keyways symmetrically placed on the outer surface of the second mounting hole 15. The front end of shaft head 1 and shaft 3 are interference-fitted and equipped with double keys to ensure connection strength and stability. A spring mounting sleeve 4 is installed at the rear end of shaft 3. The spring mounting sleeve 4 is fitted inside the drum gear 7. A protective cover 6 is installed outside the drum gear 7. The front end of the protective cover 6, the front end of the drum gear 7, and the first mounting hole 12 at the rear end of shaft 3 are connected by the first bolt 5 and the third bolt 9, respectively. The rear end of the protective cover 6, the rear end of the drum gear 7, and the rear end of the spring mounting sleeve 4 are connected by the second bolt 8. After installation, it is installed on a pipe-removing machine for processing of steel pipes.

[0031] Although embodiments and drawings of the present invention have been disclosed for illustrative purposes, those skilled in the art will understand that various substitutions, variations and modifications are possible without departing from the spirit and scope of the present invention and the appended claims. Therefore, the scope of the present invention is not limited to the contents disclosed in the embodiments and drawings.

Claims

1. An improved device for connecting shafts, characterized in that: It includes a shaft head (1) and a shaft (3). The shaft head (1) is installed at the front end of the shaft (3). A spring mounting sleeve (4) is installed at the rear end of the shaft (3). The spring mounting sleeve (4) is fitted inside the gear (7). A protective cover (6) is installed outside the gear (7). The shaft head (1) has a second mounting hole (15) built in, and keyways (16) are symmetrically arranged on the outer surface of the second mounting hole (15). A third mounting platform (14) is arranged on the outer circumference of the shaft head (1). The front end of the shaft (3) is provided with a shaft tip (13), and the outer circumference of the rear end of the shaft tip (13) is provided with a first mounting plate (10) and a second mounting plate (11), respectively. The rear end of the shaft (3) is provided with a first mounting hole (12) arranged along the circumference.

2. The improved device for connecting shaft connection according to claim 1, characterized in that: A buffer device (2) is installed between the third mounting plate (14) of the shaft head (1) and the second mounting plate (11) at the front end of the shaft (3).

3. The improved device for connecting shaft connection according to claim 1, characterized in that: The outer surface of the shaft tip (13) is symmetrically provided with keys, which match the keyways (16) symmetrically provided on the outer surface of the second mounting hole (15).

4. The improved device for connecting shaft connection according to claim 1, characterized in that: The tip (13) of the shaft (3) is installed in the second mounting hole (15) of the shaft head (1).

5. The improved device for connecting shaft connection according to claim 1, characterized in that: The front end of the protective cover (6), the front end of the gear (7), and the rear end of the shaft (3) are connected by the first bolt (5) and the third bolt (9), respectively.

6. The improved device for connecting shaft connection according to claim 1, characterized in that: The rear end of the protective cover (6), the rear end of the gear (7) and the rear end of the spring mounting sleeve (4) are connected by a second bolt (8).

Images